return nbReori;
}
+//================================================================================
+/*!
+ * \brief Reorient faces basing on orientation of adjacent volumes.
+ * \param theFaces - faces to reorient. If empty, all mesh faces are treated.
+ * \param theVolumes - reference volumes.
+ * \param theOutsideNormal - to orient faces to have their normal
+ * pointing either \a outside or \a inside the adjacent volumes.
+ * \return number of reoriented faces.
+ */
+//================================================================================
+
+int SMESH_MeshEditor::Reorient2DBy3D (TIDSortedElemSet & theFaces,
+ TIDSortedElemSet & theVolumes,
+ const bool theOutsideNormal)
+{
+ int nbReori = 0;
+
+ SMDS_ElemIteratorPtr faceIt;
+ if ( theFaces.empty() )
+ faceIt = GetMeshDS()->elementsIterator( SMDSAbs_Face );
+ else
+ faceIt = elemSetIterator( theFaces );
+
+ vector< const SMDS_MeshNode* > faceNodes;
+ TIDSortedElemSet checkedVolumes;
+ set< const SMDS_MeshNode* > faceNodesSet;
+ SMDS_VolumeTool volumeTool;
+
+ while ( faceIt->more() ) // loop on given faces
+ {
+ const SMDS_MeshElement* face = faceIt->next();
+ if ( face->GetType() != SMDSAbs_Face )
+ continue;
+
+ const int nbCornersNodes = face->NbCornerNodes();
+ faceNodes.assign( face->begin_nodes(), face->end_nodes() );
+
+ checkedVolumes.clear();
+ SMDS_ElemIteratorPtr vIt = faceNodes[ 0 ]->GetInverseElementIterator( SMDSAbs_Volume );
+ while ( vIt->more() )
+ {
+ const SMDS_MeshElement* volume = vIt->next();
+
+ if ( !checkedVolumes.insert( volume ).second )
+ continue;
+ if ( !theVolumes.empty() && !theVolumes.count( volume ))
+ continue;
+
+ // is volume adjacent?
+ bool allNodesCommon = true;
+ for ( int iN = 1; iN < nbCornersNodes && allNodesCommon; ++iN )
+ allNodesCommon = ( volume->GetNodeIndex( faceNodes[ iN ]) > -1 );
+ if ( !allNodesCommon )
+ continue;
+
+ // get nodes of a corresponding volume facet
+ faceNodesSet.clear();
+ faceNodesSet.insert( faceNodes.begin(), faceNodes.end() );
+ volumeTool.Set( volume );
+ int facetID = volumeTool.GetFaceIndex( faceNodesSet );
+ if ( facetID < 0 ) continue;
+ volumeTool.SetExternalNormal();
+ const SMDS_MeshNode** facetNodes = volumeTool.GetFaceNodes( facetID );
+
+ // compare order of faceNodes and facetNodes
+ const int iQ = 1 + ( nbCornersNodes < faceNodes.size() );
+ int iNN[2];
+ for ( int i = 0; i < 2; ++i )
+ {
+ const SMDS_MeshNode* n = facetNodes[ i*iQ ];
+ for ( int iN = 0; iN < nbCornersNodes; ++iN )
+ if ( faceNodes[ iN ] == n )
+ {
+ iNN[ i ] = iN;
+ break;
+ }
+ }
+ bool isOutside = Abs( iNN[0]-iNN[1] ) == 1 ? iNN[0] < iNN[1] : iNN[0] > iNN[1];
+ if ( isOutside != theOutsideNormal )
+ nbReori += Reorient( face );
+ }
+ } // loop on given faces
+
+ return nbReori;
+}
+
//=======================================================================
//function : getBadRate
//purpose :
